St Mary's School for Girls
🇬🇧 Official data · 2025Colchester, East of England CO3 3RB · Essex
#14 of 460 all-through schools in East of England
#101 of 4,090 nationally
About St Mary's School for Girls
St Mary's School for Girls is a independent all-through located in Colchester, in the Essex local authority of East of England, England. It caters for Ages 2–17 and is a girls' school. In 2025 it enrolled 424 students. Fee-paying independent schools. Most do not publish Key Stage results in the government performance tables.
Its Success Index (England) is 95.5 out of 100, placing it in the top 5% of all-through schools in England and 14th of 460 ranked all-through schools in East of England. Its strongest component is attainment 8 (96th percentile), and its weakest is grade 5+ in english & maths (95th percentile).
Other published figures: pupils on roll 424; capacity filled 70.7%; grade 4+ english & maths 100%; ebacc average points 6.26.
There are 94 schools in Colchester; St Mary's School for Girls ranks 4th of 91 scored schools there.
Success Index (England) breakdown
Each component is a percentile against all-through schools across England.
- KS2: reading, writing & maths expected standard (35%)–
- KS2: higher standard (20%)–
- KS2: reading progress (10%)–
- KS2: maths progress (10%)–
- Progress 8 (20%)–
- Attainment 8 (30%)66.5
- Grade 5+ in English & maths (15%)82.4%
- A level points per entry (10%)–
- Community advantage (fewer pupils on free school meals) (15%)–
The Success Index (England) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for St Mary's School for Girls by the official sources.
- Pupils on roll
- 424
- Number of pupils in the latest school census.
- Capacity filled
- 70.7%
- Pupils on roll as a share of the school's reported capacity.
- Attainment 8
- 66.5
- Average GCSE points across eight subjects.
- Grade 5+ English & maths
- 82.4%
- Share of pupils with a strong pass in both English and maths GCSE.
- Grade 4+ English & maths
- 100%
- Share of pupils with a standard pass in both English and maths GCSE.
- EBacc average points
- 6.26
- Average point score across the English Baccalaureate subjects.
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Schools near St Mary's School for Girls
Closest schools by straight-line distance, with their Success Index (England).
St Benedict's Catholic College
Colchester · Local authority secondary · Ages 11–16
905 students · 416 m away
Colchester County High School for Girls
Colchester · Academy secondary · Ages 11–18
1,198 students · 416 m away
Colchester Royal Grammar School
Colchester · Academy secondary · Ages 11–18
1,073 students · 607 m away
Colchester Prep & High School
Colchester · Independent all-through · Ages 2–16
280 students · 832 m away
Philip Morant School and College
Colchester · Academy secondary · Ages 11–18
1,888 students · 902 m away
Hamilton Primary School
Colchester · Local authority primary · Ages 4–11
420 students · 909 m away
St Helena School
Colchester · Academy secondary · Ages 11–16
986 students · 1.0 km away
The Sixth Form College Colchester
Colchester · Academy sixth form · Ages 16–99
· 1.2 km away
Prettygate Junior School
Colchester · Local authority primary · Ages 7–11
250 students · 1.4 km away
Prettygate Infant School
Colchester · Local authority primary · Ages 5–7
172 students · 1.4 km away
Similar schools
Independent all-through schools in East of England with a comparable Pupils on roll.
Queenswood School
Hatfield · Independent secondary · Ages 11–18
426 students
Town Close Co-Educational Preparatory School
Norwich · Independent all-through · Ages 2–14
428 students
Saint Nicholas School
Essex · Independent all-through · Ages 2–16
439 students
Beechwood Park School
St Albans · Independent all-through · Ages 2–13
445 students
Sherrardswood School
Welwyn · Independent all-through · Ages 2–19
445 students
Kingshott School
Hitchin · Independent all-through · Ages 3–16
403 students
Frequently asked questions
Is St Mary's School for Girls a good school?
St Mary's School for Girls has a Success Index (England) of 95.5 out of 100 (Top 5% of all-through schools in England) and ranks #14 of 460 in East of England. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does St Mary's School for Girls rank in East of England?
St Mary's School for Girls ranks #14 of 460 all-through schools in East of England and #101 of 4,090 nationally on the Success Index (England) (2025 data).
How many students attend St Mary's School for Girls?
St Mary's School for Girls had 424 students in 2025.
Is St Mary's School for Girls a primary school or a secondary school?
St Mary's School for Girls is classified as a all-through covering Ages 2–17. It is a independent school.
What other schools are near St Mary's School for Girls?
There are 10 schools within 15 km of St Mary's School for Girls; they are listed on this page with their Success Index (England) and distance, and can be compared side by side.